Duet

Duet is a highly established, legitimate productivity tool with significant market penetration and verified historical utility. However, the PoU submission itself was of extremely low quality, providing zero evidence ('most people have used my product') and missing key data points ('marketcap: null'). While the product's real-world value and reach are undeniable (millions of downloads, likely >$5M ARR), the score is penalized by the lack of verifiable data provided by the submitter and the saturation of the market by native competitors like Apple's Sidecar.